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Trend Analysis of Streamflow and Rainfall in the Kosi River Basin of Mid-Himalaya of Kumaon Region, Uttarakhand

In: River Basin Management - Under a Changing Climate

Author

Listed:
  • Utkarsh Kumar
  • Rashmi
  • Dhirendra Kumar Singh
  • Suresh Chandra Panday
  • Manoj Parihar
  • Jaideep Kumar Bisht
  • Lakshmi Kant

Abstract

Due to climate change phenomenon and substantial decrease in water resources, analyzing the streamflow trend is of significant importance. In the present study, investigation was carried out to find rainfall and streamflow trends in the Kosi river watershed at different timescales from 1986 to 2016. Kosi river is one of the principal rivers in the Kumaon region. The different methods employed for trend detection of streamflow and rainfall were the Mann-Kendall (MK) test and the Sen's slope (SS) estimator. Results showed a statistically significant decreasing trend in pre-monsoonal and annual rainfall with a Sen's slope of -2.27 and -1.49 mm/year, respectively. The decreasing trends in pre-monsoon, post-monsoon, and winter streamflow were found during 1986-2016, which were not statistically significant. The results of the study help in understanding the variation and availability of rainfall and streamflow in different seasons of the year and motivate to adopt effective water management and agricultural practices for rainfed hills.

Suggested Citation

  • Utkarsh Kumar & Rashmi & Dhirendra Kumar Singh & Suresh Chandra Panday & Manoj Parihar & Jaideep Kumar Bisht & Lakshmi Kant, 2023. "Trend Analysis of Streamflow and Rainfall in the Kosi River Basin of Mid-Himalaya of Kumaon Region, Uttarakhand," Chapters, in: Ram L. Ray & Dionysia Gregorios Panagoulia & Nimal Abeysingha (ed.), River Basin Management - Under a Changing Climate, IntechOpen.
    • Handle: RePEc:ito:pchaps:263879
    DOI: 10.5772/intechopen.107920
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    More about this item

    Keywords

    Himalayas; climate change; streamflow; trend analysis; statistical test;
    All these keywords.

    JEL classification:

    • O13 - Economic Development, Innovation, Technological Change, and Growth - - Economic Development - - - Agriculture; Natural Resources; Environment; Other Primary Products

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